Ethylene imine polymer, a cationic polymer also known as polyethyleneimine, has diverse industrial applications. In the paper industry, it serves as a wet-strength additive to enhance the durability of paper products when exposed to moisture. In water treatment, it acts as a flocculant, aiding in the aggregation and removal of suspended particles. The polymer is employed in the textile industry for fabric finishing, improving properties like wrinkle resistance, dye uptake, and as a component in fabric softeners to increase softness and reduce static electricity. It is also used in the rubber industry to improve mechanical properties and flexibility. Additionally, it serves as a key component in adhesives and coatings, providing strong bonding and film-forming capabilities. In the oil and gas industry, it functions as a surfactant and corrosion inhibitor. Its cationic nature makes it effective in personal care products, such as hair conditioners, creams, and lotions, where it helps in smoothing, detangling hair, and improving texture and stability.